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Apple's iPhone smartphone is a useful addition to a business person's toolkit. In addition to basic functions like voice calling, text messaging and emailing, there are also a host of apps for listening to music or podcasts while you work, checking the weather and checking flight statuses when you travel. The iPhone's speakers, in some situations, need some kind of amplification, and a dock or speaker system isn't always available when you have, for example, an emergency conference call. However, after increasing the volume of the phone, there is a trick you can employ for improving overall loudness.

1. Open an audio app or start a call.

2. Press the "Volume Up" button on the side of the iPhone until the volume is at the maximum.

3. Place the iPhone bottom-down in a pint glass or similar glass. The glass will amplify the sound.

Things Needed

Pint glass or similar glass

Tips

If the volume seems low in the Music app, check that "Volume Limit" is set to "Off" by tapping "Settings" and choosing "Music."

If you're not using an external microphone, this may make it harder for the other party to hear what you say because the iPhone's microphone will be at the bottom of the glass. If that happens, hold the iPhone over the glass instead of putting in inside.

About the Author

Based in Brooklyn, N.Y., Mike Venture has been writing since 2005. He has written for the RAND Corporation, Sterling & Ross Publishers and Metropol Literary Agency. He has also worked as a technical writer at several software start-ups. Venture holds a Bachelor of Arts in creative writing from the University of Pittsburgh.